Has anyone experienced a smoke-like black ball floating in a room? Or smelled something that no one else can smell? Any help would be appreciated!

i do believe smelling stuff when no one else can smell it is an aparition or something like that i don't quite remember the word right now i haven't heard it in over 5 years

I've had experiences with black things. I couldn't say they where smoke-like balls. They were more like completely black 'critters'.

I've had many experiences throughout my life with smelling things that 'were not there' or no one else could smell.
It could be related to a spirit or to psychic ability. Much of what I experienced had to do with psychic ability.